Freelancer profile translated to English.
Back to original languageAbout Jean-Luc
My dual roles as a system administrator and developer allow me to work on cross-functional topics, whether at the design ("Build") or operational ("Run") level.
I can take on one-off or longer-term assignments.
Feel free to contact me to discuss your needs.
French
Native or bilingual
English
Fluent
Remote only
Primarily works remotely
Experience
- Appnexus / XandrSenior Software EngineerApril 2016 - June 2022 (6 years and 3 months)Quimper, FranceAppNexus was acquired by AT&T in 2018, then renamed Xandr following this acquisition.From 2016 onwards, I focused more on development tasks while still maintaining an Ops role as we managed our applications' production autonomously.Main projects:
- Product design and backend development (Python/Flask/SQLAlchemy) of an internal application for incident management.
- Participation in a project to detect pornographic websites (Machine Learning). I was mainly responsible for data pre-processing, result validation, and the production deployment of the model created by a data science team.
- Implementation of the Apache Airflow solution for managing ETL (Extract, Transform, Load) jobs. I participated in providing local development environments (docker-compose), the production deployment of the cluster and DAGs, and operational maintenance. I was responsible for the DAGs architecture and associated tests.
- Migration of a PostgreSQL database (analysis of data and associated applications, action plan preparation, script development, coordination of different teams).
- Migration of CentOS systems to Ubuntu for multiple applications (Debian packaging, Infrastructure as Code with Puppet).
- AppnexusSystem administratorJune 2014 - March 2016 (1 year and 9 months)Quimper, FranceFollowing the acquisition of Alenty by AppNexus, I continued to maintain Alenty's infrastructure and migrated part of the applications to AppNexus's servers.
- AlentySystem and Network Administrator / DevOpsMarch 2011 - June 2014 (3 years and 3 months)Quimper, FranceAlenty offered a solution for measuring the visibility of online advertisements. The company was acquired in June 2014 by the American company AppNexus, a specialist in programmatic advertising.I managed the entire system architecture autonomously, in close collaboration with the engineering team, in a DevOps environment.The infrastructure was hosted at OVH (bare-metal) and AWS, and comprised over 100 servers (physical and virtual).Main projects:
- Migration of the real-time data collection platform from OVH to AWS, with high availability and high traffic constraints (peaks of 20,000 requests/sec). The architecture was based on EC2, ELB, AutoScaling Group, S3.
- Design of a platform for executing Selenium tests (tests in browsers, both desktop and mobile).
Recommendations
Be the first to recommend Jean-Luc
Help this freelancer shine by sharing your experience working together.
These freelancer profiles also match your criteria
Agatha Frydrych
Backend Java Software Engineer
4.7
(3)
2
Baptiste Duhen
Fullstack developer
4.6
(4)
5
Amed Hamou
Senior Lead Developer
4
(2)
7
Audrey Champion
Web developer
4.3
(3)
4
Education
- Professional Bachelor's Degree, Systems and Networks ManagementUniversity of Rennes I2008
- University Diploma of Technology, Computer ScienceUniversity of Rennes I2007